Marshall, WV
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Marshall in West Virginia · Population: 30,129
TRI sites such as American Electric Power Kammer/mitchell Plant; Covestro; Westlake Natrium LLC; SDWIS systems such as MOUNDSVILLE; MARSHALL COUNTY PSD 4; MARSHALL COUNTY PSD 3; NPL sites such as Hanlin-Allied-Olin anchor Marshall, WV's EPA extract. Derived burden score 58/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Marshall include MOUNDSVILLE; MARSHALL COUNTY PSD 4; GLEN DALE WATER WORKS, while American Electric Power Kammer/mitchell Plant leads reported TRI pounds among local Form R filers. AQS median AQI 39 / peak 81 in 2024.
Burden score 58/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Marshall -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Marshall, WV: EPA TRI 2023 reporting year
Same facilities, both years
-17.4%
12 facilities that filed in 2022 and 2023
Whole inventory
-21.7%
1.3 million lb → 1.0 million lb, every facility that filed
Between the two reporting years, 0 facilities filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Marshall, WV's total reported releases fell from 1.3 million lb in 2022 to 1.0 million lb in 2023, based on EPA TRI filings.
- Marshall, WV's off-site transfers fell from 223.4 thousand lb in 2022 to 51.9 thousand lb in 2023, based on EPA TRI filings.
- Marshall, WV's land releases fell from 636.4 thousand lb in 2022 to 570.7 thousand lb in 2023, based on EPA TRI filings.
- Marshall, WV's air releases rose from 274.4 thousand lb in 2022 to 299.4 thousand lb in 2023, based on EPA TRI filings.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 267 (74%) | 92 | 0 | 81 |
| 2023 | 149 (42%) | 202 | 1 | 213 |
| 2022 | 162 (45%) | 199 | 0 | 99 |
| 2021 | 140 (40%) | 212 | 1 | 121 |
| 2020 | 87 (74%) | 31 | 0 | 72 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in West Virginia, see the EPA's AirNow.gov.
Water Systems (9)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| MOUNDSVILLE | 9,911 | 1 |
| MARSHALL COUNTY PSD 4 | 4,063 | 6 |
| MARSHALL COUNTY PSD 3 | 2,694 | 0 |
| GLEN DALE WATER WORKS | 2,495 | 4 |
| MCMECHEN MUNICIPAL WATER | 2,212 | 2 |
| GRANDVIEW - DOOLIN PSD | 1,942 | 0 |
| MARSHALL COUNTY PSD 2 | 1,601 | 2 |
| BENWOOD WATER DEPARTMENT | 1,510 | 1 |
| CAMERON WATER | 962 | 8 |
TRI Facilities (13)
| # | Facility | Total Releases |
|---|---|---|
| 1 | American Electric Power Kammer/mitchell Plant | 4.0M lbs |
| 2 | Covestro | 940.2K lbs |
| 3 | Westlake Natrium LLC | 309.3K lbs |
| 4 | Marshall County Coal Resources Inc. | 192.5K lbs |
| 5 | Clearfork Processing Plant | 70.2K lbs |
| 6 | Elementis Speciaties Inc | 34.5K lbs |
| 7 | Natrium Gas Plant | 27.4K lbs |
| 8 | Williams Ohio Valley Midstream - Moundsville Fractionation P | 25.5K lbs |
| 9 | Majorsville | 12.3K lbs |
| 10 | Oak Grove Plant | 9.4K lbs |
| 11 | Williams Ohio Valley Midstream - Fort Beeler Gas Processing | 9.0K lbs |
| 12 | Certainteed Gypsum | 57 lbs |
| 13 | Highline Warren LLC - Warren Northeast | 0 lbs |
Superfund Sites (1)
| Site Name | Status | HRS Score |
|---|---|---|
| Hanlin-Allied-Olin | NPL Site | 53.98 |
Cities in Marshall (7)
Frequently Asked Questions
What is the environmental risk level in Marshall, West Virginia? ▼
Are there Superfund sites in Marshall? ▼
How many toxic release facilities are in Marshall? ▼
What is the air quality in Marshall? ▼
Is the drinking water safe in Marshall? ▼
What environmental agencies cover Marshall? ▼
What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.